What is an EdCamp? According to edutopia, Edcamps are: Free to all participants; A free-flow of ideas and information about education, education technology and best practices for teachers; An unconference model of sessions throughout the day for spontaneous topics, chats and activities; The ability of being a presenter is at your discretion (and courage)
Tanning bed bulbs and lamps should be replaced when they have been used to 80 percent of their expected life cycle, and typically hit this mark about one year after they have been installed. Low-pressure lamps have a life cycle of 300 to 1,700 hours, while high-pressure bulbs last 300 to 9,500 hours.
Experts suggest that a good rule of thumb is to replace your mattress every seven years. In seven years, the mattress will most likely not be providing you the most comfort and support. If you're older than 40, it may be wise to get a new mattress every five to seven years because our bodies are more susceptible to pressure as we get older.